ExtJs MCQs (Chapterwise Multiple Choice Questions)

Which of the following xtype(s) defines a grid column?

gridcolumn

column and gridcolumn

column

Answer & Explanation

Correct Answer: gridcolumn

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What action does the remove() function perform?

removes a component from this container

removes all components from this container

removes itself from a parent container

Answer & Explanation

Correct Answer: removes a component from this container

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True or False. There can only be one locked column.

False

TRUE

Answer & Explanation

Correct Answer: False

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What is that config option for changing CSS class on a column cell?

Style

tdCls

CLS

CSS

Answer & Explanation

Correct Answer: tdCls

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Which one of the following is true about the Ext viewport?

The viewport can only have 4 items in it.

The viewport does not allow a different layout type to be specified.

The viewport has a 4px black border by default.

The viewport automatically re-sizes itself to the size of the browser viewport.

Answer & Explanation

Correct Answer: The viewport automatically re-sizes itself to the size of the browser viewport.

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Extjs 4.x is Sencha's latest JavaScript framework for developing cross-platform web applications

False

True

Answer & Explanation

Correct Answer: True

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Which of the following is not a subclass of Ext.grid.column.Column?

Ext.grid.column.Number

Ext.grid.column.Boolean

Ext.grid.column.String

Ext.grid.column.Date

Answer & Explanation

Correct Answer: Ext.grid.column.String

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What are the 4 folders that a developer should create to employ the recommended MVC architecture in Ext?

Clicks,Selects,Changes,Checks

Controls,Views,UIs,Events

Models,Views,Animations,HTML

Models,Views,Controllers,Stores

Answer & Explanation

Correct Answer: Models,Views,Controllers,Stores

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What is the correct option to completely fill the width of a container?

width: ‘max’

width: 100%

flex: 1

maxWidth: true

Answer & Explanation

Correct Answer: flex: 1

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Which of the following is a required config option for grid column?

itemId

data

id

dataIndex

Answer & Explanation

Correct Answer: dataIndex

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